Fritz kaeperle



No. 623,909. Patented Apr. 25, i899. F. KAEFEBLE. APPARATUS FUR MIXINGCGLD AND HOT WATER.

(Application mea .mi 2s, 189s.)

(No Model.)

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Nirn STATES AFRITZ KAEFERLE, OF HANOVER, GERMANY.

APPARATUS FOR MIXING COLD AND HOT WATER.

SPECIFICATION forming part of Letters Patent No. 623,909, dated April25, 1899.

Application iiled July 23, 1898. Serial No. 686,653. (No model.)

To @ZZ whom, t may concern,.-

Be it known that I, FRITZ'KAEFERLE, a subject of the Emperor of Germany,and a resident of Hanover, Empire of Germany, have invented a certainnewr and useful Improved Apparatus for Mixing Cold Vater with Hot Wateror Steam, of which the following is a full, clear, and exactdescription.

The present invention consists of an apparatus for mixing hot and coldwater or cold water and steam and allowing the same to iiow oi to thepoint of utilization without there being any danger of scalding thepersons using the apparatus.

In order to render the present specification more easily intelligible,reference is had to the accompanying drawings, in which similar lettersof reference denote similar parts throughout the several views. i

Figure 1 is a sectional plan of the device; Fig. 2, a verticallongitudinal section 5 and Fig. 3, a plan, partly in section, of amodied form of the apparatus.

The apparatus comprises the cold-water chamber I and the hot-water orsteam chamber II, a mixing-chamber III, a spring-closed valve ct fromthe cold-water to the mixing chamber, and a similar valve b from thehotwater or steam chamber to the mixing-chamber, said valves being bothnormally closed by their respective springs. The chambers I and II areeach provided with hot and cold water inlets, the hot water passing toII and the cold to I. The spindles of the valves of, and b extendthrough the wall, separating the mixing-chamber from the chamber IV,containing the valve-operating device, and the mixing-chamber isprovided with an outlet c for the contents of the same to theshower-bath and an outlet d to the ordinary bath. In the chamber IV ispivotally suspended a lever g at c', said lever being adapted to swingin the path of movement of the spindles of valves a and b and beingoperated by means of a screw-spindle f, adapted to move in a threadedsleeve of the cover of the chamber IV.

The apparatus operates in the following manner: Vhen the spindle f isscrewed inwardly, it will push the swinging lever g first against thevalve-spindle of the cold-water chamber and open this, thus allowingcold bein g scalded on opening the valves.

water to enter the mixing-chamber. On being further screwed in it willmeet the spindle of the valve b of the hot-water or steam chamber andopen this; but in any case the hotwater or steam chamber valve cannot beopened until a certain amount of cold water has passed into themixing-chamber, so that there can be no danger of the person bathingSimultaneously on closing the apparatus the hot- Water or steam valve bwill be closed first and then the valve a of the cold-water chamber, sothat in closing the apparatus there is no possibility of scalding theoccupant of the bath by hot Water or steam issuing, owing to the factthat only cold water will be able to issue finally from the apparatus.

In Fig. 3 instead of a chamber IV a bow or standard c is provided. Inorder to prevent too hot a mixture from issuing from the apparatus, thespindle f is provided with a stop or collar f', which stops the movementof the spindle inward as soon as the valves c and b have been opened farenough to allow a mixture of maximal temperature t0 be formed in III. Ifthe hot water of the chamber II is not sufficiently hot to obtain orproduce the required temperature, a device is employed for stopping theinflux to the chamber III of the cold Water after the spindle fhas beenscrewed in farther. This device consists of a conical collar a',attached to the spindle of the valve a, so that when the same is openedbeyond a certain distance the collar or cone a' begins to close thecold-water orifice to the chamber III, the hot-water oriiice being fullyopened.

From the above' description it will be seen that neither on opening noron closing the valvefcan the occupant of the bath be scalded by too hotwater or steam issuing from the outlet.

I claim as my inventionl. A mixing apparatus for cold water and hotWater or steam, consisting of the combination of a cold-water chamberand a hotwater or steam chamber having each a springpressed valvenormally closed, a mixin g-chamber into which said valves open, thespindles of said valves extending through the said chamber into a fourthchamber and ending in one plane, a swinging Alever suspended in said IOOfourth chamber and means for swinging said lever in the plane ofmovement of the two Valve-spindles, so as to operate to open thecold-Water valve iirst substantially as described.

2. The combination of a Coldwater chamber I and a hot-Water or steamchamber Il, spring-pressed valve in each chamber normallyclosed, amixing-chamberHI into which said valves open, valve-spindles extendingthrough said mixing-Chambers and ending approximately in one and thesame plane, a pivotally-snspended lever g to swing in a plane in whichthe said valve-spindle ends end and means for swinging the said lever soas to operate the eold-Water-ehamber valve iirst in the manner and forthe purpose substantially as described.

The combination of a cold-water chamber I and a hot-Water or steamchamber H eaeh having valve a and b respectively, said valves beingnormally spring-Closed, a mixing-chamber IH communicating with the saidchambers by means of said Valves, valve-spin-A dles to said Valvespassing through said mixing-chamber and out of the same, and havingtheir ends ending in the same transverse plane, a piVotally-suspendedlever to swing in the plane in which both the spindles lie and operatethe same as specified, and a conical collar l) on the spindle of thecold-waterehamber valve to enterand partially or Wholly close thevalve-opening of the said chamber when the valve has been forced openbeyond a certain distance in the manner and for the purposesubstantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FRITZ KAEFERLE. Witnesses:

K11-urn LATHRor, LEONORE BAsoH.

